Normally, it takes about 42 days to have intercourse after a lateral perineal incision. If there is infection in the wound, intercourse may be delayed. The blood supply at the perineum is relatively rich, and the skin wound usually heals in about 5-7 days after the lateral incision. Although the lateral incision wound has healed 5-7 days after delivery, the woman’s body state and pelvic organs have not yet recovered, so it is not advisable to have sex at this time. The normal birth of the woman, in the 42 days after the birth of the woman can return to the state of non-pregnancy. Therefore, if the lateral incision wound is not infected, the pregnant woman can have sex after her body recovers normally. In addition, at present, the vaginal mucosa and subcutaneous tissue sutures are basically absorbable sutures, which take 4-6 weeks to be completely absorbed. As mentioned above, after lateral incision, it is appropriate to have intercourse in about 42 days. If intercourse is too early after delivery, it will easily lead to perineal pain and even upstream infection. In addition, after the delivery, we need to pay attention to keep the vulva clean and dry, and change the underwear regularly.